Boring and dumping auger



April 9, 1935.

l H. E. sATRE BORING AND DUMPING AUGER Filed May 5, 1934 2 Sheets-Sheet lk l E afe,

April 9, H E.A SATRE BORING AND DUMPING AUGER Filed May 5, 1934 2 Sheets-Sheet 2 V15 M #9' a 1 Hilmar, Sat1-(e, Chicago, Ill., `assignor,thy Vxnesne assignments, to Spencer, White & Prentis, In-

; corporated,` New York,

1 connecticut Y., corporation of a Application May-51934, Serin No. 724.128 f j fgiiclanns. Kolqzssssf The present invention'relates tothatftypelof boring augeradaptedtoV the excavatingof deep holes for the reception ofA concrete-in the.con struction of piling, etc., and` has particular reference to the excavating auger and cooperating means for discharging the auger of its load of excavated material. The principal object of the invention to which the several parts vcontribute is the coordination and interrelation of the elements by which'the earthis dug, hoisted and'discharged, allY automatically functioning in proper sequence Vwithout interruption. n

'Ihe specific conveying apparatus for bearing away the dumped excavated material J forms the subject matter of anotherapplication filed 1 4I2 upon which it is guidedvertically.,A L"

concurrently herewith and bearing ASerial-INO.

A..preferred embodiment of .the invention. is hereinafter described in detail, the said descrip-A tionv being predicated upon. the accompanying drawings, wherein i Fig. 1 is-a vertical section throughjthe holebeing dug, showing the auger bucket with its lead and.drive shaft and trip .'insideelevation near the bottomof the hole; 1

, Eig. 2 is asimilar vewwith theY auger bucket in elevated positionv fordumping;

' Fig. 3 is averticalsection through'the auger in dumping position; a y

Fig. 4 is avertical sectionv through thefauger afterv dumping and: ready toA descend for further digging; f

. Fig. 5 is a top plan View of Vtheaugenin the position shown in Fig. 4; s l Fig. 6 is a detail in perspective ofthe lower ,cutting element of the auger; andY f A Fig. 7'is a fragmentary top plan asviewed from the line 1 1 of Fig. 2.

It will be obvious that ltheinvention issusceptible of embodiment inmodiedstructural formswithout departure from the essential feartures thereof, wherefore the description and .the drawings are to be taken in an illustrative rather than in a limiting sense. x .g

Havingreference to Fig. .1 ofthe drawings. the excavation is. illustrated. at Il ,with thelead. drive shaft axially disposed; at' I2 .witlik its bit I3 inengagement withrthe'earth.v Theboring `auger bucket I4 is shownnearthe bottomm ofthe shaft rascending or` descending.` The auger bucket isV of therotary type r:driven bysplined engagement with the rib I5 ofjthe leadk ...'Ihe. augery is .hollow and-is provided at the shaft Y position on the frame above the openingand'be- `neath the auger .bucket as illustratedinFig. 2."

OFFICE bottom with( hinged; doors carryingl marginal I portions I (iV-'provided with cutting edges II and also one or more with side doors 18. provided Ywith side cuttersor reamers I9 whichlproject` beyond `the side of the bucketV and Vare renewably and ladjustably mounted upon doors; at 20. Thedoors themselves are mounted uponhinges 2| 'disposed atan angle'tothe vertical whereby the tendency of -the doors and their cutting edges is to swing outward to the extent permitted by the' limiting Ychains 22. .t

In operation, the weight'v of the bucket serves to.v dig bymeans lof the cutters Ilinto-the earth at the bottom of the hole,V it being noted 4that the cutters Yare provided at their outer corners with. downwardly extendngclearing bits I'Ia byV means Yof which thediameter of theexcavation is well defined. i' Y Inasmuch as the cutters-in their digging position as illustrated-in Figs 1 .and 4 presentan open inouthabove the downwardlyand forwardly inclinedvcutting edges, the excavated material is fed through such mouth into the interior` of the bucket. At the same time thenmaterial from the side cutters or reamers I9 is fed through the mouth formed between the partially open door and the-reamers I9,'1it being noted that these side cutters excavatebeyond the bottom cut- A ters, thus providing Aa space within ywhicha liner of any suitable construction may `be Vpositioned above Vthea-side cutters. .y Y

The y.auger bucket having becomezufllled, the

sof-

shaftIZ is given a' slight movement in a counter 26 which ride upon the frame. Durnggthe digging operation and. at the time the auger bucket is ascending: the car iswithf-V drawn from the rear end of the conveyor frame charged therein so that the' ascendingV auger bucket can pass between the bifurcated Lends o the conveyor frame as indicated in Fig.7.} v Y, Immediately thereafter the car assumes the delivering Va load of .material' previouslygdisf i 1j i '1.997.313 i UNI-Teo STATES PAT n f ,Y *Y V1,997,313-

. be later described.

2 f c Above 'the bucket in line on each side of the lead shaft I2 areV disposed in fixed position a pair of abutment triggers 21, the purpose of which will with one or more. half doors 30 whereby the doors with their cutting edges may be raised-or' lowered.

VThe follower piate l2s is heid" lis'eivatei position by engagement vsith detenta-311 cnbcthsides thereof having nosesflataking o 'ver'the l upper edge of the bucket as illustrated 'in Figi;

These noses are equipped with rollers 32 for a purpose hereafter made clear'. 'detente'` 31C .l are pivoted at 33Y tothe plate 28 above` slots 28a, in said plate and each has a secondfnose 31'17" underlying asear 34 wliicn .engages the .detent and holds the same `in overhanging; engagement withthe upper edge oi .the'bucketV Ihese'sears 34 are heldin .operativel engagement with `the detents 3i gby means of coil springs 35 seatedin pockets 36. a

The skip car 25 having assumed a position beneath the auger bucket 1.4. vthe continued :upward movementoi the auger causesV the' abutment triggers 21 to engagefzthesearsl and .to press the same downwardly against the tension vof the springs 35 thereby causing the outer' ends of the sears to ride downwardly 0I" the detents 3l and to engage .the noses-3.1 b tripping. the detents about the pivots .33 and freeing. the nose 31a.- from the edge of the bucket. The weight ofthe excavated .material upon the. door'n and theV continued upward movement of thebucket'against the trigger abutments 21 causes the door to swing downwardly to an openl position .as represented in Fig.. 3, ydumping'the load ofmaterial. inthe skip carv25. Thereupon the car25 is'moved'by theconveyor to the left away from beneath 'the bucketand the'latter begins :its movement in a lowering direction.v

As the auger. bucket descends freinthe. posi'- tion shown in Fig. 13 the `hooks 21aon the trigger abutments 21 klift the 'follower plate by meansof the :detentsl which are heldin the position shownv in Fig. 3 by engagement of the rollers 32 with the inside wall of theaugenthus progres-V sively closing the door 39 by means of theohain 2S until. simultaneously `,when the ydoor has reached the closed positionthecnoses 31a ofcthe detents '3| reachr the open'top of the bucket and snap over theedge thereof in the position shown in Fig. 4.

YThus itr will be .seen that as `the auger bucket approaches the upward limit of its travel vthe skipV car is positioned beneath the same and as the auger bucket reaches its upward limit the :door-.is released by the trigger abutments 21 and opened by the weight of the material therein'under compulsion'-als'o of the follower plate-28, whichfol-` lower lplate also acts' to clean out the' inside of the auger shell. 'The load of material is deposited in the skip car andas it moves away and the 'auger bucket begins to descend,` the door' is closed' andthe follower plate elevated to the top ofthe bucket-by the hooks 21a. Thereafter'the bucket continues its descent `to .the zone of operations andthe renewed rotation of the leadk shaft -12 resultsin a renewal of the digging operation.

Iclaimz' 1.*An excavating-land dumping auger comprising `a hollow shell with cutters at its bottom and having associated with its bottom cutters a door,

a follower member movable within the shell and operatively connected to the door, latch mechanism yfor holding the follower in place in the upper part of the shell with the door closed when the auger is inlowered' excavating position, a plunger device fixed above and in line with the latchmechanism yand arranged when the nlled auger reaches an elevated dumping position to trip the latch mechanism and cause the follower to releasethe doorn and discharge the contents and as the empty shell is lowered to restore the follower and with Vift-"the door to closed latched 2; An' exc.a'vating'y and dumping auger comprising asubstantially cylindrical hollow shell withf'cuttersrat.itshottom and sides and having associated with its bottom cutters a hinged door,

f a follower plate member slidably movable within they shell above and operatively. detached'from the door, a pairo latch mechanisms comprising afdetent and .a sear acting-thereon for holding the follower in place inthe upper part of the shell with the doorLclosed when the auger is in lowered excavating position, a V'trigger device comprising a pair of rods fixed above and in line with the .latch mechanisms and Varranged when the-filled auger reaches Yan elevated dumping position to trip the latch. mechanismsandY cause the followerplate to descend andrelease the door and discharge the contents and as' the empty shell is lowered to restore Ythe follower plate and with'it the hinged door to closed latched position.l a

.y 3. An excavating and dumping auger geomprising a hollow shell with cutters at itsbottom and having associated with its bottom cutters a door, a follower member movable within the'. shell'andoperatively connected to the door, ylatch mechanismv for holding the follower'in place in the upper part of the shell `with the door closed when the auger is in loweredexcavating positioira plunger. ydevice xed above and inline with the latch mechanism fand arranged when the filled auger reaches auf-elevated dumping position to trip. thev latchmechanism and cause the follower to releasethe `door and-discharge the frzontentsand Las the empty shell is lowered to restore the follower and with it the doorA to closed latchedk positiomfin: combination with a guiding andidriving shaft splined to the auger shell for relative axial movement only.` 'f

.4. Anl excavating and' dumping auger comprising a substantially cylindii'calfhollow shell with cutters at'its bottom and sides and having associated withits bottom cutters a hinged door, 4av follower plate member .slidably movable within the shell above and operatively detached from the door, a pair of' latch mechanisms comprising Va detent and a sear. acting thereon for holding .the follower in place in the upper part of the with the latchmechanisms'andarranged when the filled auger reaches anfelevated dumping position to trip the latchA mechanismsand cause the follower plate to'Y descend and release'the door and.` v:discharge theV contents and ias the emptyvshell is VVloilv'ered to restore the follower Aplate and -withjfit the `'hingedr` "door to closed latched positon,- in' combination with means comprisingafconveyor shlftable 'toa position'b'e low `and away .from the 'elevatedv auger for receiving and transporting the excavated material.

5. An excavating and dumping auger comprising a substantially cylindrical hollow shellrwith a door at its bottom marginally provided with serrated cutting edges, those serrations adjacent the outer end of the cutting edges projecting downwardly and outwardly beyond the general line 'of the inner serrations. Y

6. An excavating and dumping auger comprising a substantially cylindricalhollow shell with ar door at its bottom marginally provided with serrated cutting edges, those serrations adjacent the outer end of the cutting edges. projecting downwardly and outwardly beyond the general line of the inner serrations, the auger also provided with a side door opening outwardly and having adjustably mounted thereon a reaming cutter, the outward swing ofthe side door and cutter adjustably controlled.

7. An excavating and dumping auger comprising a. hollow shell with cutters at its bottom and having associated with its bottom cutters a door, a follower member movable Within the shell and operatively connectedto the door, latch mechanism for holding the follower out of operation with the door closed when the auger is in lowered excavating position, a device arranged when the lled auger reaches a dumping position to contact and trip the latch mechanism and causeY the follower to release the door and discharge the contents and as the empty shell is lowered to restore the follower and with it the door to closed latched position.

HILMAR E. sA'rRE. 

